William maceone



(No Model.

I Y W. MACRONE. WATERPROOFING PAPER AND OTHER PABRIGS AND MACHINERYTHEREFOR- N0? 341,587. Patented-May 11, 1886.

UNITED STATES PATENT OFFICE.

WILLIAM MAORONE, OF GLASGOW, COUNTY OF LANARK, SCOTLAND.

WATERPROOFING PAPER AND OTHER FABRICS AN D MACHINERY THEREFOR.

SPECIFICATION forming part of Letters Patent No. 341,587, dated May 11,1886.

Serial No. 181,599. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM DIAORONE, a subject of the Queen of GreatBritain and Ireland, residing at Glasgow, in the county of Lanark,Scotland, letter-press printer, have invented new and usefulImprovements in \Vaterproofing Paper and other Fabrics, and in MachineryTherefor, of which the following is a specification.

My invention relates to improvements in waterproofing paper and otherfabrics, and in machinery therefor, whereby a waterproofed paper orother fabric of a' superior class is produced with great rapidity and ata comparatively small cost.

According to my invention the paper or other fabric to be waterproofed,as rolled off a web, is carried through a tank or cistern of preparedvarnish or size heated to a temperature of about 212 Fahrenheit, and ata rate slow enough to permit the air contained in the paper or otherfabric being entirely replaced by the varnish or size. The paper, &c.,is then drawn between two pressure-rollers heated a few degrees higherthan the liquid varnish or size. These rollers express the surplusvarnish or size from the fabric, and allow it to flow back to the tank.The fabric is now carried a short distance, and at this stage of theoperation it receives a dusting of powdered steatite, which is brushedin and surplus cleaned off by a convenient arrangement of brushes. Thissteatite sets the varnish or size, and the fabric is immediately woundon a reel or drum at the end of the machine. The size or varnish forthis operation forms the subject of another patent deposited by me atthe same time as this application; and in order that my invention may bereadily understood I proceed to describe the same with reference to theaccompanying drawing, which represents a perspective view of a machinefor carrying out my invention, one of the sides of the tank or cisternbeing removed, in order that the working parts of the machine may beclearly seen.

A is a frame-work or table, on which I mount a tank or cistern, a, forcontaining the varnish or size, which is maintained at a temperature ofabout 212 Fahrenheit by any suitable heating apparatus or method. Inthis tank, and at a convenient height above the liquid,I mount twofeed-rollers, b b, between which passes the fabric to'be waterproofed,and coming from a drum or reel, B. From these rollers the fabric passesinto the heated varnish or size under two leading or conducting rollers,c c, mounted in the lower part of the tank and immersed in the varnishor size. 011 leaving these rollers the fabric passes upward and betweentwo heated rollers, d (2 whose function is to express the surplusvarnish or size from the fabric. From these rollers the fabric passesover a table, 6, where it receives a dusting of powdered steatitc, whichis sprinkled-over it to set the varnish or size.

The use of the powdered steatite forms an important feature in myinvention.

A brush, f, (or brushes,) having a reciprocating to and -fro motion, ora brush (or brushes) having a rotating motion, is mounted above thetable 6 in suitable bearers and operates to brush in and clean offthepowdered steatitc.

The fabric thus waterproofed passes to a drum or reel, 0, on which it iswound, and is then ready for use.

The arrows indicate the direction of travel of the fabric into and outof the machine.

Although I have, for the purpose of clearness, omitted all gearing fromthe drawing, yet it is obvious that any suitable means may be adoptedfor driving the rollers and for operating the brush or brushes.

I claim as my invention The process herein specified of waterproofingpaper and other fabrics, consisting in immersing the paper or otherfabric in a varnish that is heated sufficiently to cause it toimpregnate the material through and through, removing the surplusvarnish or size, and setting the same by brushing powdered steatite uponthe surface of the paper or fabric and into the varnish, substantiallyas set forth.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

WILLIAM MAGRONE. \Vitnesses:

JOHN MUIR, JAMES MACEAE, Both of 176 West George Street, Glasgow, S0-

Zz'citors.

